I have both. I honestly can't tell the difference between the two. They're both easy on, easy off (I found Blackfire to be a little easier, but others have found Powerlock easier). Slick and gloss are about the same for both. If you ask me, they're probably manufactured by the same company with some inert ingredients added to each to make them look and smell different but act the same in every other category.:biggrin1: